. >> that's right, my very close friend of mine in college, steve schneider, similar people, we both grew up, he grew up in ohio, i indiana, both pitchers on the baseball team and we both studied math at harvard. so he was someone i grew close with in college. and sort of observed the degradation in his mental state and it ended with him taking his own life. about seven years ago now. and so yeah it was very difficult process to observe and it certainly built some deep seeded motivation in me to understand what was happening. >> rose: if you were doing all this over, would you go in a different direction? i mean would you have gone into some aspect of life sciences directly rather than coming the way that did you through mathematics and computer science and writing code? wince don't think so. you know, i feel like i studied some life sciences while in college. so i spent some time in courses on neuroscience and computational neuroscience and it seemed clear to me that many of the innovations were going to be happening in the development 6 novel sensors to generate more data about the